The Democratic women's political group EMILY's List launched a new campaign Tuesday, taking on conservative candidates endorsed by former Alaska Gov. Sarah Palin.

Washington (CNN) - The Democratic women's political group EMILY's List launched a new campaign Tuesday, taking on conservative candidates endorsed by former Alaska Gov. Sarah Palin.

"We didn't want Sarah Palin's voice to go unchallenged," EMILY's List President Stephanie Schriock said at a Washington news conference. She said the campaign, 'Sarah Doesn't Speak for Me' is a way to "call upon women and men to let their voices be heard and to reject Palin's reactionary candidates and backward-looking agenda."

Palin has endorsed candidates in gubernatorial, Senate and Congressional races around the country, calling the women candidates she backed "mama grizzlies." EMILY's List has made its own series of endorsements in races nationwide.

Schriock said the campaign was created because the candidates Palin has endorsed are "extreme" and "bad for America."

Schriock said Fiorina laid off tens of thousands of people as a "failed" corporate CEO. "The choice in California could not be clearer. The choice between a job killer and an EMILY's List hero, Barbara Boxer," said Schriock.

In May, Palin addressed the conservative women's group Susan B. Anthony's List. Countering the EMILY's List event, the group drove its bus with the message "Abortion is Not Health Care" around the block where the news conference was held.

Susan B. Anthony List President Marjorie Dannenfelser said, "EMILY's List's campaign is what "repels women from being a part of the traditional women's movement."

"Palin is used as a punching bag", she said, "Other women who run for political office know this can happen to them too," said Dannenfelser.

"No one is attracted to that approach to politics. That's why there is a hunger for authenticity in politics. Palin has an inclusive approach to politics," Dannenfelser said.